Long-Term Resident Lunar Disc Syndrome
Earth designation: Long-Term Resident Intervertebral Disc Herniation
Long-Term Resident presentation of Intervertebral Disc Herniation in lunar residents. Herniation of intervertebral disc material, causing nerve root compression. In lunar gravity, discs undergo paradoxical changes: they can expand slightly from reduced compressive loading (causing back pain and height increase in early residence) and then become more vulnerable to herniation during t...
Lunar Risk Factors
Heavy EVA suit donning/doffing (repeated awkward lifting). Mining operations with heavy equipment. Disc expansion in early lunar residence increases vulnerability. Dehydration reducing disc resilience.
Symptoms
Back or neck pain, radicular pain radiating to extremities, numbness, weakness, bowel/bladder dysfunction in severe cases.
Lunar Presentation
Height increase in first weeks of lunar residence from disc expansion — not always symptomatic but indicates disc vulnerability. Pain during EVA suit donning is common chief complaint.
Diagnosis
Clinical neurological examination. MRI (if available). X-ray to rule out fracture. Straight leg raise test.
Treatment
Physical therapy, pain management, epidural steroid injection, surgical discectomy if severe.
Lunar Medical Bay Protocol
Pain management: NSAIDs, acetaminophen, muscle relaxants from pharmacy. Relative activity modification. Physical therapy program (specific exercises for low-g environment). Ice/heat (adapt for habitat conditions). Epidural steroid injection (trained personnel only). Surgical discectomy not available — evacuation if progressive neurological deficit.
Evacuation Criteria
Cauda equina syndrome (bowel/bladder dysfunction). Progressive neurological deficit. Intractable pain unresponsive to maximum medical therapy. Inability to safely perform EVA duties.
Prevention
Proper lifting technique for EVA suit. Ergonomic workstation design. Core strengthening exercises. Height monitoring in first month.